在groovy中的两个多嵌套映射中切换值

def map1 = [
    key1: [
        subkey1: "value1",
        subkey2: "value2"
    ],
    key2: [
        subkey3: "value3",
        subkey4: "value4"
    ]
]

def map2 = [
    key3: [
        subkey5: "value5",
        subkey6: "value6"
    ],
    key4: [
        subkey7: "value7",
        subkey8: "value8"
    ]
]

map1.key1.subkey1 = map2.key3.subkey5

println map1.key1.subkey1 // 输出：value5